“We are working towards solving this challenge, but I agree. We are all impatient to move forward in a way that gives healing to that community and the kind of support and future for everyone in that community and across Indigenous communities in this country.”

This is the second Liberal event in recent months that has been interrupted by a Grassy Narrows protester.

In March, Trudeau apologized for his response to a protester who interrupted a Liberal fundraising event to draw attention to the mercury poisoning in Grassy Narrows.

As security escorted the woman out, Trudeau thanked her for her donation: “I really appreciate your donation to the Liberal Party of Canada.”

People in Grassy Narrows have had health problems for decades linked to chemical-waste mercury dumped into the English-Wabigoon river system throughout the 1960s and 1970s.